It should be borne in mind that we encounter the beings of the Higher Hierarchies, but whether or not we perceive them and establish the right connection with them depends on whether we kindled a light in our last earthly existence so that we do not pass them by and are able to receive impulses from them. That is why it is a complete fallacy to maintain that it is unnecessary to concern oneself with the beyond during earthly existence.
Source: Rudolf Steiner – GA 140 – LIFE BETWEEN DEATH AND REBIRTH: 11. The Mission of Earthly Life as a Transitional Stage for the Beyond – Frankfurt, 2 March 1913
Translated from shorthand reports unrevised by the lecturer, by R. M. Querido
The great Rudolf Steiner Quotes Site 